Controlling Layout

Homework 1: Working with Drawing Layers

• Setting units and DBU
• What are drawing layers?
• Working with the LPF file
• Colors and patterns
• Order of layers
• Error layer on top
• Cloaking and visibility
• Changing the layer
• Drawing tips
• Configuration options
• Modes

Lecture 1: Drawing and Modeling Layers

• The layout flow
• What about EM?
• Units, Grid, and DBU
• Controlling the grid
• Tab and Control keys
• Bringing an artwork cell up

Homework 2: Manipulating Layout and Schematic Layout Connectivity

• Start a layout with library named Module
• Set the grid
• Tab and control keys
• Wheel on the mouse
• Aligning shapes
• Boolean operations
• Array copy
• Measuring distance
• Example - a bend in schematic and layout
• Levels of snapping together
• Anchoring and freezing
• Other autosnap options

Lecture 2: Using Artwork Cells

• The model layer mapping - importing DXF
• Import mypad library (DXF) and transistor library (GDS)
• The layout browser for DXF and GDS
• Exporting DXF and GDS
• Putting artwork cells in schematic layout
• Edit in place
• Saving cell edits
• Artwork cell icons
• Fixed artwork cells for schematic elements
• Example - Mypad
• Cell ports

Homework 3: 3D View and Exporting Layout

• Setting up and Controlling the 3D view
• Exporting files - GDS and DXF
• Exporting Gerber
• Running a script
• Export options

Lecture 3: The LPF File

• Example: A transistor package - forcing the right connection
• Transmission lines and the LPF file - Line Types
• Looking at the LPF file externally
• Changing the Line Type
• Negative Layers
• Vias
• Drill Holes